diff --git a/src/Linux/curl_easy.h b/src/Linux/curl_easy.h
index 047f3e2..c9c5e83 100644
--- a/src/Linux/curl_easy.h
+++ b/src/Linux/curl_easy.h
@@ -6,6 +6,7 @@
 #define CURL_EASY_H
 
 #define _CRT_SECURE_NO_WARNINGS // Use strncpy for portability.
+#include <cstdint>
 #include <cassert>
 #include <cstddef>
 #include <exception>
diff --git a/src/local_cache.h b/src/local_cache.h
index da86967..d9b0d3f 100644
--- a/src/local_cache.h
+++ b/src/local_cache.h
@@ -5,6 +5,7 @@
 #ifndef LOCAL_CACHE_H
 #define LOCAL_CACHE_H
 
+#include <cstdint>
 #include <string>
 #include <vector>
 #include <memory>